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Technical Data Sheet
PartsTable / COMPONENT / M-8-B-20S
M-8-B-20S ✓ Verified by PartsTable
— · GATE VALVE
WHAT YOU NEED TO KNOW
Full open or full close only — never throttle Rising stem shows position visually
Throttling a gate valve erodes seats
PRODUCT OVERVIEW

The CAP,VALVE is a the manufacturer industrial component. Key specifications include material: STEEL CORROSION RESISTING, special_features: BOTTOM PUMP, end_item_identification: WILDEN PUMP MODEL M8. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-01-119-0626, indicating validated use in U.S. government and defense logistics supply chains. Available through authorized enterprise resellers and TPM (Third Party Maintenance) channels.

Verify compatibility with your specific system configuration before ordering.

WHERE IT FITS
M-8-B-20S
NSN: 4820-01-119-0626
FSC: 4820
CAGE: 52837 — PSG CALIFORNIA, LLC DIV DOVER CORPORATION (USA)
SPECIFICATIONS
materialSTEEL CORROSION RESISTING
special_featuresBOTTOM PUMP
end_item_identificationWILDEN PUMP MODEL M8
NSN4820-01-119-0626
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: M-8-B-20S · OEM ⚠ VERIFY BEFORE ORDERING Gate valves = FULL OPEN or FULL CLOSE only — never throttle. Partial opening causes seat erosion and vibration. ✓ BROKER TIP Rising stem shows valve position visually — easier maintenance. Non-rising stem saves headroom. PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
MATERIAL: STEEL CORROSION RESISTING
TECHNICAL CHARACTERISTICS (FLIS)
END ITEM IDENTIFICATIONWILDEN PUMP MODEL M8
SPECIAL FEATURESBOTTOM PUMP
MATERIALSTEEL CORROSION RESISTING
VERIFIED SUBSTITUTES & CROSS-REFERENCES 20
PL-140Interchangeable
interchangeable cross-reference
interchangeable
42HInterchangeable
interchangeable cross-reference
interchangeable
42HVInterchangeable
interchangeable cross-reference
interchangeable
20SInterchangeable
interchangeable cross-reference
interchangeable
GGG-G-17 TY8CL1Interchangeable
interchangeable cross-reference
interchangeable
FG-31Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is M-8-B-20S?
M-8-B-20S is a CAP,VALVE.
What parts can replace M-8-B-20S?
There are 20 known substitutes for M-8-B-20S: PL-140, 42H, 42HV and 17 more. Substitute compatibility should be verified for your specific system.
What is the NSN for M-8-B-20S?
M-8-B-20S is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-01-119-0626. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026